Oh Tad sweetie - you've got PTSD. And while you think you're protecting your heart by not getting too close to anyone, in the long run that's hurting you.

As for a new relationship - it's not necessary. It can be nice, and life-affirming, but can be challenging. It might help free you, (it did me) but you also need to be strong enough to take what comes.

But you need to fill your life with friends and family if you're not going to seek another intimate relationship. And I think a good therapist could help you with your PTSD.